Modal characteristic analysis of the APR1400 nuclear reactor internals for seismic analysis

Jong Beom Park, Youngin Choi, Sang Jeong Lee, No Cheol Park, Kyoung Su Park, Young Pil Park, Chan Il Park

Research output: Contribution to journalArticle

11 Citations (Scopus)


Reactor internals are sensitive to dynamic loads such as earthquakes and flow induced vibration. Thus, it is essential to identify the dynamic characteristics to evaluate the seismic integrity of the structures. However, a full-sized system is too large to perform modal experiments, making it difficult to extract data on its modal characteristics. In this research, we constructed a finite element model of the APR1400 reactor internals to identify their modal characteristics. The commercial reactor was selected to reflect the actual boundary conditions. Our FE model was constructed based on scale-similarity analysis and fluid-structure interaction investigations using a fabricated scaled-down model.

Original languageEnglish
Pages (from-to)689-698
Number of pages10
JournalNuclear Engineering and Technology
Issue number5
Publication statusPublished - 2014 Jan 1


All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

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